Carburetor adjusting tool



IJune 4, 1957 n. R. cozAR-r CARBURETOR DJUSTING TOOL Filed-July 7, 19.55

IIHIIIIIIHIIIIIHIIIHHIIIIII INVENTOA ATTORNEY nited States Patent CARBURETOR ADIUSTING TOOL David R. Cozart, Oklahoma City, Okla.

Application July 7, 1955, Serial No. 520,513

1 Claim. (Cl. 81-3) The present invention relates to the art of automobile repair, and more particularly to a hand tool for adjusting the carburetor screw of an automobile carburetor.

Many of the more popular makes of automobiles which have air conditioning compressor and generator and power steering has the mechanism for operating the same connected to the engine adjacent the carburetor in such close contines that these parts make it difficult for a mechanic to get a conventional screw driver in the slot of the carburetor adjusting screw. Difculty is also experienced in maintaining the tip of a conventional screw driver Within the carburetor screw slot while rotating the screw for adjustment.

Therefore the principal object of this invention is to provide a screw driver like hand tool having an elongated exible shaft.

Another object of this invention is to provide a carburetor adjusting screw hand tool which will maintain contact with the carburetor screw after being engaged with the same.

An additional object is to provide a hand tool of this class having relatively few parts, and which therefore may be manufactured at a comparatively low cost.

A further object is to provide a hand tool of this class which will show no appreciable wear with continued use and which will therefore have a comparatively long life.

The present invention accomplishes these and other objects by providing a shielded flexible shaft with a screw driver like tip at one end for engaging the slot of a carburetor screw. The tip is enveloped by a tubate socket rigidly connected to the shield for retaining the tip in contact with the carburetor screw. A disk knob is rigidly connected to the end of the exible shaft opposite the screw driver tip for manually rotating the shaft and tip independently of the shield and socket.

Other objects will be apparent from the following description when taken in conjunction with the accompanying single sheet of drawings, wherein the ligure is a longitudinal cross-sectional view of the device, partly in elevation.

Like characters of reference designate like parts in those figures of the drawings in which they occur.

In the drawings:

The reference numeral S indicates the device, as a whole, which includes a selected length of tubular exible shielding 6 having abrupt ends 10 and 12 perpendicular to its longitudinal aXis and housing a length of flexible shafting or cable 8. The shaft 8 has abrupt ends 9 and 11 perpendicular to its longitudinal axis and is preferably slightly longer than the shield 6 for projecting a selected distance beyond the ends and 12, respectively, of the shield.

A tubular sleeve 14 having a bore complemental with the circumference of the shield 6 is rigidly connected, as by soldering, adjacent one end 16 to the shield 6. The free end 18 of the sleeve 14 is preferably of a length to project slightly beyond the end 11 of the shaft 8. From its free end 18 the sleeve is bored out slightly larger than the circumference of the shield 6 and ending abruptly adjacent the end 10 of the same for freely receiving longitudinally a cylindrical member 20. The inwardly disposed end of the member 20 is bored or recessed for receiving the end portion 11 of the shaft 8 and is rigidly connected thereto as by soldering. The free or outwardly projecting end of the member 20 has an integral screw driver-like tip 22. The tip 22 is preferably of a size to be freely received by the slot of a carburetor adjusting screw, not shown. A tubular socket 24 of a selected length and diametrically slightly larger than the member 20 is longitudinally disposed around the member 20 and is removably engaged adjacent one end with the end 18 of the sleeve 14 by threads 26.

A disk knob 30 having a hub 32 centrally bored to receive the end 9 of the shaft 8 is rigidly connected to the same by a set screw 34. The hub 32 preferably is formed with an integral sleeve 36, of a selected length, and having a bore great enough to freely receive the adjacent end portion 12 of the shield 6. The purpose of the sleeve 36 is to stabilize or steady the knob 30 against transverse movement relative to the shield 6 and the knob is manually rotated.

In actual practice it has been found that the lower end portion of a discarded conventional automobile speedometer cable serves to supply the shield 6, cable 8 and sleeve 14. By adding the screw driver-like member 20, socket 24 and turning knob 30, the device can be manufactured very economically.

Obviously the socket 24 may be made in various sizes to accommodate carburetor adjusting screws of different diameters.

Operation In operation the socket is manually placed over the carburetor adjusting screw, not shown, while the shielded exible shaft 8 is disposed toward one side of the engine, not shown, in a convenient position. Thereafter the knob 30 is manually rotated, which rotates the shaft 8 within the shield 6 and engages the tip 22 within the slot of the adjusting screw and which rotates the screw in the desired direction by the rotation of the shaft 8. Since the shaft 8 and its shield 6 are exible and comparatively small, the same may be threaded through a maze of parts adjacent the carburetor and yet operate eiciently.

Obviously the invention is susceptible to some change or alteration without defeating its practicability, and I therefore do not wish to be confined to the preferred embodiment shown in the drawings and described herein, further than I am limited by the scope of the appended claim.

I claim:

A carburetor adjusting tool, comprising: an elongated exible tubate shield; a exible shaft disposed within said shield and projecting from each respective end thereof; a tubate sleeve surrounding one end of said shield and rigidly connected thereto, said sleeve projecting beyond the adjacent end of said flexible shaft; a cylindrical member longitudinally disposed within said sleeve, said member having a recess for receiving the adjacent end of said flexible shaft, the free end of said member having a screw driver-like tip projecting beyond the end of said sleeve; a tubate socket longitudinally enveloping said tip, said socket removably connected at one end to said sleeve; and a disk knob having a centrally bored hub axially connected rigidly to the end of said exible shaft opposite the rst said end for rotating said shaft.

References Cited in the le of this patent UNITED STATES PATENTS 1,447,947 Grimont Mar. 6, 1923 1,544,520 Putraw June 30, 1925 2,054,138 Sandell Sept. 15, 1936 2,073,903 ONcill Mar. 16, 1937 

